{"content":"Development journal for commit 3b68c23 (fix: hide composer edit panel when preview is shown) in metaapp_buzz.\n\nUser reported that clicking 发布 showed the post preview panel side-by-side with the edit textarea instead of replacing it. Root cause: the panel-toggle logic in main.js was correct (showPreview/showEditPanel swap the hidden class between .composer-panel and .preview-panel), but styles.css only defined display:none for .composer.hidden, .toast.hidden, .buzz-comments.hidden and .preview-panel.hidden — no rule matched .composer-panel.hidden, so the edit panel never actually hid.\n\nFix: one-line CSS rule `.composer-panel.hidden { display: none; }`. The intended flow now renders correctly: edit → 发布 → edit panel hides, preview shows → 返回编辑 restores the edit panel → 确认发布 closes the overlay and resets to the edit state.","contentType":"text/plain;utf-8","attachments":[],"quotePin":""}